A person stands in a canyon and claps their hands. They hear the echo from the canyon wall 2.6 s later. The speed of sound in air is 340 m/s. How far away is the canyon wall from the person?
221 m221 \text{ m}221 m
442 m442 \text{ m}442 m
884 m884 \text{ m}884 m
1140 m1140 \text{ m}1140 m
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.